US4145471A
Expired / Lapsed
US
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Reinforced metal matrix composite
Assignee: Fiber Materials Inc
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Filing: 1975-10-22
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Granted: 1979-03-20
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Expires: 1995-10-22
Abstract
Abstract A carbon fiber reinforced metal matrix composite is produced by depositing a metal boride coating on the surface of the fibers and subsequently immersing the fibers in a molten bath of the metal matrix material. The boride coating is formed by passing carbon fiber through a gaseous mixture of chlorides of the metal and boron in the presence of zinc vapor at elevated temperatures. The subsequent reaction deposits out a submicron lamina of metal boride on the carbon fibers serving to enhance wetting of the fibers by the molten metal, with the lamina preventing chemical reaction between the fibers and metal matrix materials and also providing a strong mechanical bond therebetween.
Inventors
- 👤 Ernest G. Kendall
- 👤 Roger T. Pepper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:03
CPC Classifications
C; C23; C23C; C23C16/00; C23C16/22; C23C16/30; C23C16/38; C22; C22C; C22C49/00; C22C49/14; C23C16/44; C23C16/54; C23C16/545; D; D02; D02G; D02G3/00; D02G3/02; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12431; Y10T428/12438; Y10T428/12486; Y10T428/12493; Y10T428/12535; Y10T428/12625; Y10T428/12736; Y10T428/12743; Y10T428/249921; Y10T428/249924; Y10T428/249927; Y10T428/29; Y10T428/2913; Y10T428/2916; Y10T428/2918; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2944; Y10T428/2949; Y10T428/30; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
37 words
A carbon fiber reinforced metal matrix comprising: a continuous multifilament carbon fiber; a metal boride film coating substantially all surfaces of the carbon fiber; and, a metal matrix material infiltrated throughout and adhered to the multifilament fiber.
Claim 2
Dependent Claim
37 words
A carbon fiber reinforced metal matrix comprising: a continuous multifilament carbon fiber; a metal boride film coating substantially all surfaces of the carbon fiber; and, a metal matrix material infiltrated throughout and adhered to the multifilament fiber.
Claim 3
Dependent Claim
29 words
The carbon fiber reinforced metal matrix as defined in claim 1 wherein; the metal boride is titanium boride; and the metal matrix material is aluminum or an aluminum alloy.
Claim 4
Dependent Claim
44 words
A composite product comprising a plurality of carbon fibers each have a coating of titanium boride, said fibers being disposed in a substantially solid matrix of metal selected from the group consisting of magnesium, lead, zinc, copper, aluminum, tin and alloys of said metals.
Claim 5
Dependent Claim
44 words
A composite product comprising a plurality of carbon fibers each have a coating of titanium boride, said fibers being disposed in a substantially solid matrix of metal selected from the group consisting of magnesium, lead, zinc, copper, aluminum, tin and alloys of said metals.
Claim 6
Dependent Claim
23 words
A composite as defined in claim 3 wherein the thickness of said coating is in the range of between 0.01 to 2.0 microns.
Claim 7
Dependent Claim
13 words
A composite as defined in claim 3 wherein said fibers are substantially graphite.
Claim 8
Dependent Claim
12 words
A composite as defined in claim 5 wherein said metal comprises aluminum.
Claim 9
Dependent Claim
12 words
A composite as defined in claim 5 wherein said metal comprises copper.
Claim 10
Dependent Claim
12 words
A composite as defined in claim 5 wherein said metal comprises lead.
References Cited (Backward Citations)
US3894863A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-03-19 | 1982-09-18 | 1983-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-19 | 1986-09-18 | 1987-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-19 | 1990-09-18 | 1991-03-20 | $7700.00 | Window Closed / Lapsed |